Arturo Marcial Alvarez, 19, was slain about 4:30 p.m. April 11 after getting off a King County Metro bus at Pacific Highway South and Dash Point Road. Witnesses saw a dark green van pull up behind the bus, then gunfire burst from the passenger-side window after Alvarez had left the bus and walked on the sidewalk toward the van, police reports say.

The van was then spotted careening around the bus before pulling a U-turn and driving to a residential street to elude any witnesses, according to court records. Witnesses reported that the driver was a woman.

Alvarez walked a few yards around the corner before collapsing. Medics found him with several gunshot wounds; police found damage from about five pellets on nearby cars. Authorities believe 10 shots were fired in all.

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Police records indicate that King County sheriff's deputies assigned to Metro contacted Alvarez in February. In that instance, he told police he was in a "disagreement" with some people and feared they were looking for him, "presumably to harm him," reports say.

Detectives tracked down the license plate of the green van, which was registered to Garcia-Garcia, according to police. Garcia-Garcia appeared to have matched the witness description of the driver at the shooting scene, reports indicate.

A search of the vehicle's history yielded a March shooting in which the van was fired upon several times while parked in the 1000 block of South Donovan Street in the South Park neighborhood of Seattle. One witness injured by flying glass identified himself, but the other witnesses either claimed to have no idea what happened or refused to give their identification to police, incident reports say.

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A witness to the Federal Way shooting identified Garcia-Garcia as the driver in a photo montage April 12.

Later that same night, about 11:37 p.m., Seattle police responded to a report of gunfire at the same South Park address where the van had been shot at month earlier. There, cops found Garcia-Garcia, who claimed she was sitting in the driver's seat of her parked van when a car carrying three men pulled up. She told police three men got out of the car and shot at her van. She ducked down, but a bullet grazed her head.

A Seattle detective reportedly reviewed video of the incident and claimed that Garcia-Garcia returned fire.

A search of the vehicle indicated it resembled witness descriptions of the van in the Federal Way slaying, according to police reports. A detective interviewed Garcia-Garcia on April 13. She denied being in Federal Way the day of the shooting.

She remains detained on $750,000 bail.

Less information is available about the Federal Way shooter, except that he's a Kent resident known as "Diablo." Charges have not yet been filed, but he remains held on $1 million bail. Police believe he fired at Alvarez from the front passenger seat of the van.